Stock Markets June 3, 2026 02:26 PM

DoubleLine Portfolio Manager Warns AI-Backed Debt Is Very Likely to Become a Bubble

Investor cautions favoring balance-sheet strength as credit markets heat around AI financing

By Ajmal Hussain GOOGL META

A DoubleLine portfolio manager told a Bloomberg credit forum that AI-related debt is almost certain to become a bubble. He urged investors to prioritize firms with robust balance sheets and investments that include strong legal protections, while noting that demand for AI debt remains elevated and many deals are supported by large technology companies.

DoubleLine Portfolio Manager Warns AI-Backed Debt Is Very Likely to Become a Bubble
GOOGL META

Key Points

  • A DoubleLine portfolio manager said AI-related debt is very likely to reach bubble levels and advised caution.
  • Investors were urged to focus on issuers with strong balance sheets and on deals that include protective covenants or other safeguards.
  • Many AI debt transactions continue to attract strong demand and are often supported by large technology companies (hyperscalers) such as Alphabet and Meta; credit markets and technology sectors are directly implicated.

At the Bloomberg Global Credit Forum in New York, a portfolio manager from DoubleLine delivered a stark assessment of the market for debt tied to artificial intelligence projects, saying the chance of that market becoming a bubble is effectively certain.

Speaking to a gathering of investors and bankers, Robert Cohen stressed that money managers should place emphasis on companies with strong balance sheets and on debt transactions that include meaningful protections for creditors. He framed this advice as a response to what he sees as a high probability of frothy behavior in credit markets tied to AI financing.

"What’s the probability that we will be in an AI bubble? I’ll put maybe 100% on that," Cohen said.

Panelists at the forum also noted that, despite the warning, the market has not yet reached bubble conditions and that investor demand for AI-related debt instruments remains robust. Many of these financings have support from large, profitable technology firms - commonly referred to as hyperscalers - with examples cited including Alphabet Inc. (NASDAQ:GOOGL) and Meta Platforms Inc. (NASDAQ:META).

Cohen additionally observed that equity valuations could be showing greater signs of stretch. He offered a working definition of an equity bubble as a situation in which prices embed overly optimistic expectations for future growth, implying that current market pricing may be pricing in growth that proves unrealistic.

The guidance from the DoubleLine manager centers on defensive positioning in credit exposure - favoring issuers that already demonstrate balance-sheet resilience and structuring investments with protections that can mitigate downside risk if anticipated growth does not materialize.


Context limitations - The remarks reflect the manager's assessment at the forum. The panel discussion noted ongoing demand for AI debt and the common backing of such deals by major technology companies, but did not state that market-wide bubble conditions have been reached.

Risks

  • Credit markets: Excessive enthusiasm in purchasing AI-related debt could lead to a frothy market that may correct sharply if growth expectations are unmet.
  • Equities: Equity valuations may be stretched if prices already reflect unrealistic assumptions about future growth, increasing the risk of valuation downside.
  • Investor exposure: Fund managers assuming companies will grow into their debt obligations risk losses if projected growth fails to materialize, affecting holders of corporate debt and related credit instruments.

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